Instrumentation Calculators

Instrument Accuracy Calculator

Use our Precision Calculator for Instrument Accuracy in Engineering Units to increase the accuracy of your measurements. With the help of this instrumentation tool, you can determine how reliable your instruments are, ensuring accurate and reliable findings. For a deeper understanding, examine the significance of each parameter in the computation process.

When it comes to measurements, accuracy is crucial. The complex process of calculating instrument accuracy in practical units is made simpler with our Precision Calculator. Let’s analyze the important variables that impact the accuracy calculation.

Instrument Accuracy Calculator

Instrument accuracy refers to the degree of conformity between the measurement provided by an instrument and the true or expected value of the quantity being measured. It quantifies the instrument’s ability to provide reliable and consistent results. Accuracy is often expressed as a percentage, indicating the potential deviation from the true value.

Being highly accurate is essential, not just an acceptable result. Accurate measurements are fundamental to quality assurance, safety, and compliance in several industries. The Precision Calculator is a trusted instrumentation tool that helps you get and keep this level of accuracy.

  • The output of our calculator, representing the instrument’s accuracy in practical units (e.g., mbar, inHg, etc.).
  • The specified accuracy of the instrument, expressed as a percentage. This parameter outlines the potential deviation from the true value.
  • The difference between the maximum and minimum values within which the instrument is designed to operate. It establishes the boundaries of the instrument’s measurement capability.

This calculation happens through a straightforward formula:

Accuracy (Engineering Units) = (Accuracy Percentage / 100) × Range.


 Range=Max Value−Min Value

  • Input the Accuracy Percentage.
  • Input the Range.
  • Receive instant results for Accuracy in Engineering Units.

Assessing the accuracy of a pressure transmitter with a measuring range from -20 mbar to 200 mbar. The specified accuracy of the pressure transmitter is 0.5%. Calculate the accuracy in engineering units for this pressure transmitter using the given parameters.

  • Minimum measuring value : -20 mbar
  • Maximum measuring value: 200 mbar
  • Accuracy in Percentage: 0.5%

Determine the range of the pressure transmitter:

Range=Max Value−Min Value

Range=200 mbar−(−20 mbar)

Range=220 mbar

Use the formula to calculate the accuracy in engineering units:

Accuracy (Engineering Units)=Accuracy Percentage/100×Range

  • Accuracy (Engineering Units)= 0.5/100×220 mbar

Accuracy (Engineering Units)=0.005×220 mbar

Accuracy (Engineering Units)=1.1 mbar

  • The accuracy in engineering units for the pressure transmitter, with a measuring range from -20 mbar to 200 mbar and an accuracy of 0.5%, is 1.1 mbar. This implies that the actual pressure measurement may vary by up to 1.1 mbar from the true value, accounting for the specified accuracy of 0.5%.

The below calculator used to calculate the instrument accuracy from percentage to  Accuracy in Engineering units.

Sundareswaran Iyalunaidu

With over 24 years of dedicated experience, I am a seasoned professional specializing in the commissioning, maintenance, and installation of Electrical, Instrumentation and Control systems. My expertise extends across a spectrum of industries, including Power stations, Oil and Gas, Aluminium, Utilities, Steel and Continuous process industries. Tweet me @sundareshinfohe

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